................................................................................................ 43
3.1.6 Hot days ................................................................................................... 46
3.1.7 Growing degree days ............................................................................... 49
3.2 Rainfall .................................................................................................................... 52
3.2.1 Rainfall totals ........................................................................................... 52
3.2.2 Dry
Table 11 Summary of performance for consent 10810-1 23
Table 12 Evaluation of environmental performance over time 24
List of figures
Figure 1 Configuration of the HWWTP (adapted from NIWA, 2012) 3
Figure 2 Daily hours where DO is greater than 0 g/m3 in Pond 1 and 2 8
Figure 3 Daily discharge volumes (m3/day) from the HWWTP and daily rainfall data (mm) from a
Council rainfall station located approximately 5 km east of the site (2022-2023) 12
Figure 4 Location of intertidal
Operations and Regulatory Committee Agenda April 2023
page
Doc. No: 3004955
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR February 2022
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
SoE Rocky Shore Monitoring 2019-2024
Quarries independent groundwater monitoring (blue) and flow gauging sites (orange) 10
Figure 4 Discharge rates from Civil Quarries stormwater system plotted against rainfall in 10 minute
interval totals. The red line is the consented discharge rate limit 14
Figure 5 Abstraction rates from Pond A which is where groundwater from the excavation pit is pumped
into (1 July 2022 to 30 June 2023) 15
page
iii
Figure 6 Biomonitoring sites in the Kurapete Stream in relation to
This helps
guide decision-making around growing seasons, flood
management, fishing, swimming and surf conditions. River
flows are influenced by rainfall and temperature and tell us
how dry or wet a summer is. River flow measurements can
help us ensure water use is managed in a way that protects
freshwater ecosystem health. Find more information on
river flows in the Water chapter.
Air temperature
Annual mean air temperatures in the region’s main urban
areas
page
Map1: Rain gauge sites
Table 1: Rainfall monthly and year to date totals at 27 rain gauge sites in Taranaki.
July Year to Date
Hydro_Sites
# Zero
Rain
days
Total
Rainfall
(mm)
% of
typical
month
Total to
date (mm)
% of typical
year to date
% of typical
full year
Records
Began
North Egmont at
Visitors Centre 6 1196.0 179.9 4111.000 113.9 61.1 1991
Dawson Falls 4 1418.5 296.4 4521.000 178.9 100.5
page
Taranaki Regional Council Monthly Rainfall and Environmental
Data Report for August 2022
02 September, 2022
Provisional Data Only. Note: some sites record a number of parameters
1. Rain gauge values throughout the region
Note: Taranaki co-owns rain-gauges with Horizons, so we can assess rainfalls right-out
over the Eastern Hill Country.
Map1: Rain gauge sites
page
Table 1: Rainfall monthly and year to date totals at 27 rain gauge sites in
Mangorei Hydroelectric Power Scheme - Hydrology ReportHydrology Report
Trustpower Ltd
November 2020 (Final)
Job No: 1008726.200
Table of contents
1 Introduction 1
1.1 Context 1
1.2 Scope of assessment 1
1.3 Scheme description and key locations 1
2 Catchment characteristics and water resources 5
2.1 Waiwhakaiho catchment 5
2.1.1 Drainage and geology 5
2.1.2 Catchment area and cover 5
2.1.3 Rainfall 6
2.2 Hydrometric data 6
2.3 Water use in the catchment 7
2.4 Waiwhakaiho River flows